"Tom Clancy's Ghost Recon (also known as simply Ghost Recon) is a tactical shooter video game created by Tom Clancy. The game was developed by Red Storm Entertainment, a Ubisoft subsidiary, and published by Ubisoft in 2001 for the PC; it was later ported to the Mac, PlayStation 2 and Xbox in 2002 and to the GameCube in 2003. Ports for N-Gage and Game Boy Advance were planned, but were canceled.
Unlike Clancy's other tactical shooter series, Rainbow Six, Ghost Recon is not based on any of his books. In a 2006 interview with the New York Times, Clancy suggested that the plot for the original Ghost Recon was inspired by a "letter" he had received from a CIA "official." When asked to provide more detail about the "letter," Clancy refused to comment further.
Ghost Recon's success has spawned 2 expansion packs, Desert Siege and Island Thunder, as well as numerous sequels for video game consoles and the PC."
Source: Wikipedia, "Tom_Clancy's_Ghost_Recon_(video_game)," available under the CC-BY-SA License.